Geuder Ag

Hans Geuder Gmbh

Vrmagic Gmbh

Dieter Frauenfeld

Helmut Bechtel

Volker Geuder

René Draheim

Hans-Reinhard Koch

Markus Schill

Hans Geuder

Stefan Engel

Frank Rieger

Marc Wolschendorf

Clemens Wagner

Lars-Olof Hattenbach

Bernd Schleimer

A hollow needle for an ophthalmic surgical instrument for in-vivo fragmentation of organic lenses by means of ultrasound, comprising a connection region () formed on the proximal end () for coupling onto the instrument and a needle head () formed on the distal end () having an effective surface () for emitting ultrasound waves, wherein a suction channel () for suctioning lens fragments extends in the axial direction through the hollow needle, the opening () of which is delimited by the effective surface (), characterized in that the suction channel in the needle head () is formed in a conical manner at least partially running in the direction of the proximal end (), and in that sections () running over this region () in the axial direction are formed in the wall () of the suction channel.

Hollow needle for an ophthalmic surgical instrument

The present invention relates to a device for cutting and aspirating tissue from the human or animal body, in particular for use in vitrectomy, epiretinal membrane peeling, etc., with an outer tube (), and with an inner tube () which is movable to and fro and concentrically in the outer tube () with slight play, wherein the outer tube () is closed at the free end and has, near the free end, at least one lateral opening () with at least one inner cutting edge (), wherein the inner tube () is open at the free end and there has an outer cutting edge (), and wherein the cutting edges cooperate in a cutting action during the movement of the inner tube () relative to the outer tube (), advantageously characterized by a shaping measure in or on the outer tube () and/or in or on the inner tube (), whereby the inner tube (), at least in the area of the lateral opening (), runs in the outer tube () with at least slight pretensioning.

Device for cutting and aspirating tissue

A hollow needle for an instrument used in ocular surgery for the in-vivo disintegration of organic lenses via ultrasound, having a functional part () and a connector part (), with the connector part () having handling portions() and serving to attach the tool in a removable fashion to a handle, wherein the properties of the handling portions () change upon connection of the tool to the handle, removal of the tool from the handle, and/or upon reprocessing of the tool. In addition, a method is disclosed for the production of a corresponding medical tool.

Medical tool and method for producing a medical tool

A cannula for an eye-surgery instrument, employed to shatter the lens of the eye by high-frequency oscillation and to suction out the fragments. It accommodates a suction channel with a section that is wider toward the tip of the cannula. The wider section (20) comprises at least two straight bores (8, 9, & 10), one wider than another, extending coaxial with the suction channel (7) into the cannula (1) from its tip (5). Fragments of the shattered lens accumulate in the bores in accordance with size, where they can be further fragmented by ultrasound.

Cannula for an eye-surgery instrument

Growing community of inventors

Heidelberg, Germany

Dieter Frauenfeld